Plights Creed

[Brownlie]

And so I declare with certainty,
I need to be free from this diseased unease.
Lord,
Uncertainty worships me
As serenity shuns my spirit.
Vibrating from treetops my voice
Shakes the Robins’ nest. -- What is the symbolism here?
A test to see which is stronger
Nature,
Or desperation.
I shall win at least that.
If not, my tears shall flood Sahara.
For I shall win at least that.

I would like to know what you were going for here if you wouldn't mind explaining.